S p o n s o r e d ? | Chart | Preview color key | Light Pollution | Comments/Links |
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| Adolphson Observatory | ![](/c/AdphsnObILcs0.gif?1) | | Observatory of
Monmouth College in Monmouth. |
| Aero Observatory | ![](/c/ArObILcs0.gif?1) | | A private observatory. |
| Albion | ![](/c/AbnILcs0.gif?1) | | |
| Alma | ![](/c/AlmILcs0.gif?1) | | A town in Marion county. |
| Apple River | ![](/c/ApplRvrILcs0.gif?1) | | |
| Astro-Physics | ![](/c/AstrPhyILcs0.gif?1) | | Observing site of telescope maker Astro-Physics Inc. |
| Barrington Hills | ![](/c/BrrngtnHlsILcs0.gif?1) | | A town in Cook county. Site of International Year of Astronomy events. |
| Big Cigar Astronomy | ![](/c/BigCigILcs0.gif?1) | | Club near South Beloit |
| Birmingham Astronomical Observatory | ![](/c/BrmgAsObcs0.gif?1) | | A private observatory in Thompsonville. MPC designation H53. |
| Blackhawk Observatory | ![](/c/BkhwkObILcs0.gif?1) | | A private observatory. |
| Bloomington | ![](/c/BlmtnILcs0.gif?1) | | A town in McLean county. |
| Bojarzin Observatory | ![](/c/BojarObILcs0.gif?1) | | Near Springfield. |
| Bradley | ![](/c/BrdlyILcs0.gif?1) | | Home of the Kankakee Area StarGazers. |
| Braidwood Dark Sky Site | ![](/c/BrdwdDSILcs0.gif?1) | | Near Gardner. |
| Caledonia | ![](/c/CldnILcs0.gif?1) | | |
| Carbondale | ![](/c/CrbndlILcs0.gif?1) | | Home to some members of the Astronomical Association of Southern Illinois. |
| Carlyle Lake | ![](/c/CrlylLkILcs0.gif?1) | | A site on the south-east shore of Carlyle Lake. Near the town of Carlyle. Used by members of the
St. Louis Astronomical Society
and the River Bend Astronomy Club. |
| Chamberlain Observatory | ![](/c/CbrlnObILcs0.gif?1) | | A private observatory in Brighton. |
| Champaign/Urbana Astronomical Society Observatory | ![](/c/ChampUrbILcs0.gif?1) | | An observatory of the CUAS. |
| Charleston | ![](/c/ChlstnILcs0.gif?1) | | |
| Chatham | ![](/c/ChthmILcs0.gif?1) | | |
| Chicago | ![](/c/Chicagocs0.gif?1) | | Home of the Chicago Astronomical Society. |
| Claustonberry Observatory | ![](/c/CstnbryObILcs0.gif?1) | | A private observatory near Marengo. |
| Cricket Hill | ![](/c/CHMHILcs0.gif?1) | | Part of Lincoln Park. At
Montrose Harbor. |
| Crystal Lake | ![](/c/CrstlLkILcs0.gif?1) | | |
| Danville | ![](/c/DnvILcs0.gif?1) | | A town in Vermilion county. |
| De Kalb | ![](/c/DeKalbILcs0.gif?1) | | Home of the Davis Hall Observatory at Northern Illinois University. |
| Dearborn Observatory | ![](/c/DrnbrnObILcs0.gif?1) | | Observatory of
Northwestern University.
|
| Decatur Area Astronomy Club | ![](/c/Dctur1ILcs0.gif?1) | | An observing site of the Decatur Area Astronomy Club at
Friends Creek County Park. 20 miles NE of Decatur. |
| Decatur(IL) | ![](/c/DctrILcs0.gif?1) | | Home of Requarth Observatory of
Millikin University. Requarth Observatory is host of
public observing nights. |
| Dolan Lake | ![](/c/DlnLkILcs0.gif?1) | | Also known as the Hamilton County State Fish and Wildlife Area.
Used as an observing site by the Obsessed of the EAS
(Evansville Indiana Astronomical Society). |
| Doug Firebaugh Observatory | ![](/c/JETSObILcs0.gif?1) | | A public observatory in Freeport, Illinois, partly funded by the
Planetary Studies Foundation. |
| Edwardsville Observatory | ![](/c/EdwdsvlObILcs0.gif?1) | | Near Edwardsville. |
| Effingham | ![](/c/EffhmILcs0.gif?1) | | A town in Effingham county. |
| Galena | ![](/c/GnaILcs0.gif?1) | | |
| Garden of he Gods Recreation Area | ![](/c/GrdnGdsILcs0.gif?1) | | A recreation area In
Shawnee National Forest. |
![Sponsored!](/csk/etc/redstar.gif) | Gardner Camp | ![](/c/GrdnrCmpILcs0.gif?1) | | A not-for-profit camp with youth astronomy programs. |
![Sponsored!](/csk/etc/redstar.gif) | Glencoe | ![](/c/GncILcs0.gif?1) | | |
| Grayville | ![](/c/GryvillILcs0.gif?1) | | |
| Green River State Wildlife Area | ![](/c/GrnRvrWILcs0.gif?1) | | Link. |
| Harrisburg | ![](/c/HrrsbrgILcs0.gif?1) | | |
| Harvey Observatory | ![](/c/HrvyObILcs0.gif?1) | | A private observatory. |
![Sponsored!](/csk/etc/redstar.gif) | Hawkeye Observatory | ![](/c/HwkyObILcs0.gif?1) | | A private observatory. |
| Heavens Gate Farm Observatory | ![](/c/HvsGtFObILcs0.gif?1) | | A private observatory near Beverly. Also home of the Two Rivers Spring Star Party. |
| Hennepin Canal Parkway State Park | ![](/c/HnnpnCSPILcs0.gif?1) | | State park used by some members of the Naperville Astronomical Association. |
| Hickory Knolls Discovery Center | ![](/c/1DSOs2NJcs0.gif?1) | | An environmental
education center located in
James O. Breen Community Park in St Charles.
Also site of star parties held by OneDarkSky.com. |
| J. Weiskopf Observatory | ![](/c/WskpfObILcs0.gif?1) | | Observatory with free public observing in
Byron Forest Preserve District. |
| Kirkland | ![](/c/KrkldILcs0.gif?1) | | |
| Knox College Observatory | ![](/c/KnxCObILcs0.gif?1) | | Observatory at Knox College. |
| Lake Katherine Nature Center | ![](/c/LkCthNILcs0.gif?1) | | Nature center in Palos Heights. Site of public observing sessions held by the Chicago Astronomical Society. |
| Lake Thunderbird | ![](/c/LkThndBrILcs0.gif?1) | | A lake near Putnam. |
| Lake Zurich | ![](/c/LkZrchILcs0.gif?1) | | |
| Lanphier Observatory | ![](/c/LmphrObILcs0.gif?1) | | An observatory of the Sangamon Astronomical Society. Near Pleasant Plains. |
![Sponsored!](/csk/etc/redstar.gif) | Lily Lake Observatory | ![](/c/LlyLkObILcs0.gif?1) | | A private observatory near the town of Lilly Lake. |
| Lincolnshire | ![](/c/LnclnshrILcs0.gif?1) | | Also covers Deerfield which is home of the Skokie Valley Astronomers . |
| Lockport | ![](/c/LckprtILcs0.gif?1) | | A town in Will county. |
| Lombard | ![](/c/LombardILcs0.gif?1) | | Forecast also covers Glendale Hieghts, Elmhurst, Villa Park, Addison, and Glen Ellyn. |
| Lone Wolf Observatory | ![](/c/LnWlfObILcs0.gif?1) | | A private observatory near Varna. |
| Macomb | ![](/c/McmbILcs0.gif?1) | | |
| Mantese's Farm | ![](/c/MtsFmILcs0.gif?1) | | A private farm. |
| Marengo | ![](/c/MarengoILcs0.gif?1) | | |
| Marion | ![](/c/Mrn2ILcs0.gif?1) | | |
| Massbach Ridge | ![](/c/MssbchRILcs0.gif?1) | | |
![Sponsored!](/csk/etc/redstar.gif) | Megamark Observatory | ![](/c/MgMrkObILcs0.gif?1) | | A private observatory. |
| Middle Fork River Forest Preserve | ![](/c/2FrkRvrILcs0.gif?1) | | Forest reserve and
International Dark Sky Park near Penfield. Used by the
Champaign Urbana Astronomical Society. |
| Moraine Valley Community College Observatory | ![](/c/MrnCCObILcs0.gif?1) | | observatory of
Moraine Valley Community College. |
| Morton Grove | ![](/c/MrtnGrvILcs0.gif?1) | | Forcast also covers Glenview, Wilmette, Evanston, Skokie, Park Ridge, Niles, and Des Plaines. |
| Mount Jennings Observatory | ![](/c/MJnngObILcs0.gif?1) | | A private observatory somewhere around Manteno. |
| Mount Vernon | ![](/c/MtVrnILcs0.gif?1) | | A town in Jefferson. |
![Sponsored!](/csk/etc/redstar.gif) | NAA Caton | ![](/c/NAAILcs0.gif?1) | | A site of the Naperville Astronomical Association. A few miles from Newark, but 25 miles southwest of Naperville. |
![Sponsored!](/csk/etc/redstar.gif) | NAA Minooka | ![](/c/NAAMnkILcs0.gif?1) | | An observing site of the Naperville Astronomical Association. |
![Sponsored!](/csk/etc/redstar.gif) | NAA Observatory | ![](/c/RileyObILcs0.gif?1) | | An observatory of the Naperville Astronomical Association. Near Naperville. |
![Sponsored!](/csk/etc/redstar.gif) | NAA Ransom | ![](/c/NAARnsmILcs0.gif?1) | | An observing site of the Naperville Astronomical Association. Near Ransom. |
![Sponsored!](/csk/etc/redstar.gif) | Nick Drew Observatory | ![](/c/NckDrwOILcs0.gif?1) | | A private observatory near Hamel. |
| Northwest Suburban Astronomers | ![](/c/PltinILcs0.gif?1) | | The NSA is active in the area of Palatine/Hoffman Estates. |
| OneDarkSky.com Observation Site #1 | ![](/c/1DSOs1NJcs0.gif?1) | | A clearing off of Cobblers Crossing, in Elgin. Site of public star parties held by OneDarkSky.com. |
| Our Prairie Sky | ![](/c/OPSILcs0.gif?1) | | In Park Forest. |
| PACMO | ![](/c/PACMOILcs0.gif?1) | | An observing site of the Popular Astronomy Club. |
| PICO | ![](/c/OB1483ILcs0.gif?1) | | A private observatory near Pana. |
| Paxton | ![](/c/PxtnILcs0.gif?1) | | |
| Peck Farm Park | ![](/c/PeckFrILcs0.gif?1) | | Public viewing site for the Fox Valley Astronomical Society. In Geneva. |
| Peoria | ![](/c/PeoriaILcs0.gif?1) | | Home of the Peoria Astronomical Society and the
NorthMoor Observatory.
|
| Peotone | ![](/c/PtnILcs0.gif?1) | | |
| Prairie Skies Star Party | ![](/c/PSSPILcs0.gif?1) | | Star party held at Camp Shaw-Waw-Nas-See. |
| Prairie State College | ![](/c/PrHgCgILcs0.gif?1) | | College in Chicago Heights. |
| Principia College Astronomical Observatory | ![](/c/PrnClObILcs0.gif?1) | | Observatory of
Principia College. In Elsah. |
| Rockford | ![](/c/RckfrdILcs0.gif?1) | | Home of the Rockford Amateur Astronomers. |
| SWAOG Dark Site | ![](/c/SWAOG1ILcs0.gif?1) | | A site of the South West Astronomy Observers Group in Yorkville. |
| SWAOG Light Site | ![](/c/SWAOG2ILcs0.gif?1) | | A public observing site of the South West Astronomy Observers Group. In Wheaton. |
| Serena | ![](/c/SrnILcs0.gif?1) | | A town in La Salle county. |
| Shiloh Station Road | ![](/c/ShhStnRdILcs0.gif?1) | | |
| Site "M" | ![](/c/SASMILcs0.gif?1) | | A site of the Sangamon Astronomical Society.Near Ashland. |
| Smith Observing Site | ![](/c/smith01_ILcs0.gif?1) | | Near Round Lake Beach and about 15 miles west of Waukegan. |
| Stardust Observatory | ![](/c/StrDstObILcs0.gif?1) | | A private observatory. |
| Starved Rock State Park | ![](/c/StvdRckSPILcs0.gif?1) | | State park.
Used by some members of the Astronomical Society at the University of Illinois.
Also home of Astrofest, a star party held by the
Chicago Astronomical Society. |
![Sponsored!](/csk/etc/redstar.gif) | Stelle | ![](/c/StILcs0.gif?1) | | A community in Rogers Township, IL |
| Sterling | ![](/c/Sterlingcs0.gif?1) | | |
| Streator | ![](/c/StrtrILcs0.gif?1) | | |
![Sponsored!](/csk/etc/redstar.gif) | Sugar Grove Observatory | ![](/c/SGOILcs0.gif?1) | | An observatory of the
Twin City Amateur Astronomers. In the Sugar Grove Nature Center. |
| Sullivan Observatory | ![](/c/SllvnObILcs0.gif?1) | | A private observatory in Sullivan. |
| Sunny Knoll Observatory | ![](/c/SnyKnlObILcs0.gif?1) | | A private observatory in Port Byron. |
| TASS H (Droege) Observatory | ![](/c/TASSHILcs0.gif?1) | | An observatory of the Amateur Sky Survey project. Near Batavia. |
| Taylor Dark Sky Site | ![](/c/TaylorScs0.gif?1) | | Near Yale. |
| The Decker-Grebner-Van Zandt Observatory | ![](/c/DGVZObILcs0.gif?1) | | Observatory maintained by the
Peoria Astronomical Society. In
Jubliee College State Park. |
| The Little Red School House | ![](/c/WllwSprngsILcs0.gif?1) | | A site used by the Chicago Astronomical Society. In Willow Springs. |
| The Lone Wolf Observatory | ![](/c/TLWObILcs0.gif?1) | | A private observatory near Oak Lawn |
| The Stellar Shed | ![](/c/TStlrSdILcs0.gif?1) | | A private observatory near Aledo. |
| Tinley Park | ![](/c/TnlyPkILcs0.gif?1) | | A town in Cook county. |
| U-46 Planetarium | ![](/c/U46PlnILcs0.gif?1) | | Elgin School District Planetarium in Elgin. |
| Velveeta Valley Observatory | ![](/c/VVOILcs0.gif?1) | | Aka VVO, a private observatory in Pecatonica. |
| Viking Observatory | ![](/c/VkngObILcs0.gif?1) | | A private observatory Near Galesburg. |
| Walnut Point State Park | ![](/c/WlntPtSPILcs0.gif?1) | | State park.
Used by some members of the Astronomical Society at the University of Illinois
and the Champaign Urbana Astronomical Society |
| Washington County State Recreational Area | ![](/c/WCSRAILcs0.gif?1) | | Recreation area. |
| Weinberg-King State Park | ![](/c/WnbrgSPILcs0.gif?1) | | State park near Augusta. |
| West Union | ![](/c/WstUnionILcs0.gif?1) | | |
| White Eagle Observatory | ![](/c/WhtEglObILcs0.gif?1) | | A private observatory near Naperville. |
| Winchester | ![](/c/WncstrILcs0.gif?1) | | |
| Wolf Creek State Park | ![](/c/WlfCkSPILcs0.gif?1) | | State park and site of public star parties held by the
Sandusky Valley Amateur Astronomy Club (SVAAC). |
| Woodstock | ![](/c/WdStckILcs0.gif?1) | | |
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